The process of recovering carbonic acid containing AC acid and impurities, including the treatment of the part containing carbonic acid and impurities produced in the wood processing, and the treatment in water with metal salt. Remove metal salt, treat with distillation, recover part of pure carbonic acid

摘要

Procedure for the Recovery of carboxylic acid, acid anhydride, in particular in particular that contains acetic acid, acetic anhydride, and other impurities, comprising (a) a fraction, in particular a fraction that originates from a procedure. Attachment of WoodContaining carboxylic acid and Impurities with a metal salt in the presence of Water (b) treat at least part of the fraction obtained in STEP (a) to remove the metal Salt and (c) to treat the M